Decreased fetal movements, unspecified trimester, fetus 2

This code indicates a reduction in the frequency or strength of fetal movements observed by the mother, specifically for the second fetus in a multiple gestation pregnancy. It signifies a potential concern regarding fetal well-being when the gestational age is not specified.

Apply this code when documentation explicitly states "decreased fetal movements" for the second fetus in a multiple gestation, and the trimester of pregnancy is not recorded. This is often a presenting complaint that prompts further evaluation of fetal health.

• Ensure documentation specifies "fetus 2" in a multiple gestation; otherwise, use the appropriate code for a single fetus or unspecified fetus.
• If the trimester is known, use the more specific O36.811- or O36.813- codes.
• Always sequence this code as a secondary diagnosis, with the primary diagnosis reflecting the reason for the encounter (e.g., routine prenatal visit, high-risk pregnancy).